CN204281302U - The treatment unit of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid - Google Patents
The treatment unit of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid Download PDFInfo
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- CN204281302U CN204281302U CN201420666566.3U CN201420666566U CN204281302U CN 204281302 U CN204281302 U CN 204281302U CN 201420666566 U CN201420666566 U CN 201420666566U CN 204281302 U CN204281302 U CN 204281302U
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- pipeline
- absorption tower
- plate column
- tail gas
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Abstract
The utility model discloses a kind for the treatment of unit of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid, the inlet mouth that bubble-plate column bottom is established is connected with chlorinated exhaust pipeline, the top of bubble-plate column is provided with sprinkler head, the pipeline established bottom bubble-plate column is connected to the top on absorption tower, the pipeline that bubble-plate column top is established is connected with the bottom on absorption tower, the below on absorption tower is provided with acid proof pump and is connected with the top of bubble-plate column by pipeline, pipe type graphite falling-film absorber is provided with in absorption tower, the pipeline at top, absorption tower is connected with alkali lye spray-absorption device, the bottom on absorption tower is provided with pipeline and is connected with salt acid storage tank, this device can have valence component by the hydrogenchloride effectively reclaimed in tail gas, the concentration of hydrochloric acid reclaimed reaches 20 ~ 25%, the rate of recovery of hydrogenchloride can sell or use more than 95%, resource recycling rate is high, can more than 92% be reached to other oxious component processing rate in tail gas.
Description
Technical field
The utility model belongs to titanium tetrachloride production technical field, particularly produces from fluidizing chlorination method the treatment unit reclaiming hydrochloric acid titanium tetrachloride tail gas.
Background technology
Titanium tetrachloride is a kind of important chemical industry, metallurgic product, produce titanium dioxide, the main raw material of titanium sponge, at present, the production of titanium tetrachloride adopts fluidizing chlorination method to produce more, namely chlorine is adopted, rich titanium material, refinery coke carries out being obtained by reacting titanium tetrachloride in chlorination furnace, owing to containing moisture content in chlorizated raw material, the impurity such as fugitive constituent, carry out main reaction in chlorination furnace while, the side reaction of the gaseous products such as easy generation hydrogenchloride, make chloridating gas product before entering exhaust treatment system containing a large amount of hydrogenchloride and a small amount of titanium tetrachloride, the valuable components such as chlorine (but discharge outward, pollute the environment), at present conventional treatment process tail gas is reached after environmental emission standard requires through water wash and milk of lime process discharge, this treatment process not only needs to consume a large amount of lime and water resources, and the hydrogenchloride valuable constituent that can not reclaim in tail gas, in addition, adopt water wash and milk of lime treatment effect limited, a large amount of hydrogen chloride gas is still contained to environment at the tail gas of discharge.
Chinese patent CN 202061537 U discloses a kind of tail gas treating device of chlorination furnace, this device at least one waste gas absorption tower, and the exhaust gas entrance of waste gas absorption tower is arranged on bottom it, waste gas outlet is arranged on its top; Be provided with at least one spray equipment in waste gas absorption tower simultaneously, and the bottom of waste gas absorption tower is also connected with circulation tank, spray equipment is connected by the pipeline being provided with spray pump with circulation tank, sprayed in tower body by spray equipment, acid gas in absorbent solution dropping process in dissolving, reactor off-gas, can preventing pollution.This device needs the recovery achieving hydrochloric acid, but it reclaims concentration of hydrochloric acid and generally only has about 10 ~ 12%, this hydrochloric acid due to the dense end low, cannot sell as product and use, resource recycling rate be limited.
Summary of the invention
The purpose of this utility model is to overcome problems of the prior art, provide a kind for the treatment of unit of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid, utilize this device under the prerequisite of tail gas qualified discharge, valence component can be had by the hydrogenchloride effectively reclaimed in tail gas, the concentration of hydrochloric acid reclaimed reaches 20 ~ 25%, can sell or use, resource recycling rate is high.
The technical solution of the utility model is:
A kind for the treatment of unit of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid, primarily of bubble-plate column, absorption tower, alkali lye spray-absorption device, gas-liquid separation device, settling bowl, salt acid storage tank forms, the inlet mouth that bubble-plate column bottom is established is connected with chlorinated exhaust pipeline, the top of bubble-plate column is provided with sprinkler head, the pipeline established bottom bubble-plate column is connected to the top on absorption tower, the pipeline that bubble-plate column top is established is connected with the bottom on absorption tower, the below on absorption tower is provided with acid proof pump and is connected with the top of bubble-plate column by pipeline, pipe type graphite falling-film absorber is provided with in absorption tower, the pipeline at top, absorption tower is connected with alkali lye spray-absorption device, alkali lye spray-absorption device, gas-liquid separation device, settling bowl is connected by pipeline successively, the top of gas-liquid separation device is provided with venting port, the bottom on absorption tower is provided with pipeline and is connected with salt acid storage tank.
Described bubble-plate column and absorption tower are at least more than secondary respectively.
The column plate of described bubble-plate column is provided with circular graphite bubble-cap.
Be provided with refrigerating unit outside described pipe type graphite falling-film absorber, be specially circulating water cooling device
The alkali lye that described alkali lye spray-absorption device adopts is milk of lime.
The swirler of more than secondary is set in described gas-liquid separation device.
The top of described settling bowl is provided with pipeline and is connected with sprinkler head.
Described bubble-plate column, the tower body on absorption tower are respectively equipped with preservative coat, and salt acid storage tank is glass steel material.
Described pipeline is stainless steel tube.
Recycling process of the present utility model is: the tail gas in titanic chloride production process is first washed with water by bubble-plate column and absorbs HCl, then absorption tower is entered, again absorb, the absorption liquid of distribution in pipe type graphite falling-film absorber is utilized to absorb, improve washings to the assimilation effect of HCl, when the concentration of hydrochloric acid absorbed is lower, adopt acid proof pump that the first dilute hydrochloric acid profit reclaimed is piped in bubble-plate column to repeat to absorb, the concentration of recovery hydrochloric acid is finally made to reach after more than 20%, store with salt acid storage tank, in addition, from absorption tower expellant gas through alkali lye spray-absorption, qualified discharge after gas-liquid separation, after utilizing settling bowl to carry out settlement separate and neutralization to the waste liquid after alkali lye spray simultaneously, recycling pipeline is input in bubble-plate column and recycles.
The beneficial effects of the utility model and advantage are:
Utilize this device can have valence component by the hydrogenchloride effectively reclaimed in tail gas, the concentration of hydrochloric acid reclaimed reaches 20 ~ 25%, the rate of recovery of hydrogenchloride can sell or use more than 95%, and resource recycling rate is high, and this device can reach more than 92% to other oxious component processing rate in tail gas.
Accompanying drawing explanation
Fig. 1 is treatment unit schematic diagram of the present utility model;
In figure: 1-bubble-plate column, 2-sprinkler head, 3-graphite bubble-cap, 4-absorption tower, 5-alkali lye spray-absorption device, 6-gas-liquid separation device, 7-swirler, 8-settling bowl, 9-pipe type graphite falling-film absorber, 10-salt acid storage tank, 11-acid proof pump.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, but should not be interpreted as that the scope of theme described in the utility model is only limitted to following embodiment at this point, do not departing from the above-mentioned technological thought situation of the utility model, all make according to ordinary skill knowledge and customary means various amendments, replacement and change, include in scope of the present utility model.
As shown in Figure 1, a kind for the treatment of unit of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid, primarily of bubble-plate column 1, absorption tower 4, alkali lye spray-absorption device 5, gas-liquid separation device 6, settling bowl 8, salt acid storage tank 10 forms, the inlet mouth that bubble-plate column 1 bottom is established is connected with chlorinated exhaust pipeline, the top of bubble-plate column 1 is provided with sprinkler head 2, the pipeline established bottom bubble-plate column 1 is connected to the top on absorption tower 4, the pipeline that bubble-plate column 1 top is established is connected with the bottom on absorption tower 4, the below on absorption tower 4 is provided with acid proof pump 11 and is connected by the top of pipeline with bubble-plate column 1, pipe type graphite falling-film absorber 9 is provided with in absorption tower 4, the pipeline at top, absorption tower 4 is connected with alkali lye spray-absorption device 5, alkali lye spray-absorption device 5, gas-liquid separation device 6, settling bowl 8 is connected by pipeline successively, the top of gas-liquid separation device 6 is provided with venting port, the bottom on absorption tower 4 is provided with pipeline and is connected with salt acid storage tank 10.
Further, when described bubble-plate column 1 and absorption tower 4 are distinguished more than secondary, the concentration of hydrochloric acid of recovery can reach more than 25%, and the rate of recovery is higher.
Further, the column plate of described bubble-plate column 1 is provided with circular graphite bubble-cap 3.
Further, outside described pipe type graphite falling-film absorber 9, be provided with refrigerating unit, circulating water cooling device or chilled brine device can be adopted particularly.
Further, the alkali lye that described alkali lye spray-absorption device 5 adopts is milk of lime.
Further, the swirler of more than secondary is set in described gas-liquid separation device 6.
Further, the top of described settling bowl 8 is provided with pipeline and is connected with sprinkler head 2, can realize recycling of water, saving water resource.
Because HCl and hydrochloric acid are for have corrosive medium by force, therefore the tower body on described bubble-plate column 1, absorption tower 4 is respectively equipped with preservative coat, and salt acid storage tank 10 is glass steel material, and described each pipeline adopts stainless steel, can improve the corrosion resistance nature of device, increase the service life.
Claims (7)
1. the treatment unit of a simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid, primarily of bubble-plate column (1), absorption tower (4), alkali lye spray-absorption device (5), gas-liquid separation device (6), settling bowl (8), salt acid storage tank (10) forms, it is characterized in that the inlet mouth that bubble-plate column (1) bottom is established is connected with chlorinated exhaust pipeline, the top of bubble-plate column (1) is provided with sprinkler head (2), the pipeline that bubble-plate column (1) bottom is established is connected to the top of absorption tower (4), the pipeline that bubble-plate column (1) top is established is connected with the bottom of absorption tower (4), the below on absorption tower (4) is provided with acid proof pump (11) and is connected by the top of pipeline with bubble-plate column (1), pipe type graphite falling-film absorber (9) is provided with in absorption tower (4), the pipeline at absorption tower (4) top is connected with alkali lye spray-absorption device (5), alkali lye spray-absorption device (5), gas-liquid separation device (6), settling bowl (8) is connected by pipeline successively, the top of gas-liquid separation device (6) is provided with venting port, the bottom on absorption tower (4) is provided with pipeline and is connected with salt acid storage tank (10),
The top of described settling bowl (8) is provided with pipeline and is connected with sprinkler head (2); Described bubble-plate column (1), the tower body of absorption tower (4) are respectively equipped with preservative coat, and salt acid storage tank (10) is glass steel material.
2. the treatment unit of a kind of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid according to claim 1, is characterized in that described bubble-plate column (1) and absorption tower (4) are at least more than secondary respectively.
3. the treatment unit of a kind of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid according to claim 1, is characterized in that the column plate of described bubble-plate column (1) is provided with circular graphite bubble-cap (3).
4. the treatment unit of a kind of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid according to claim 1, is characterized in that being provided with refrigerating unit outside described pipe type graphite falling-film absorber (9).
5. the treatment unit of a kind of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid according to claim 4, is characterized in that described refrigerating unit is circulating water cooling device.
6. the treatment unit of a kind of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid according to claim 1, is characterized in that described alkali lye spray-absorption device (5) adopts alkali lye to be milk of lime.
7. the treatment unit of a kind of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid according to claim 1, is characterized in that described pipeline is stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420666566.3U CN204281302U (en) | 2014-11-11 | 2014-11-11 | The treatment unit of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420666566.3U CN204281302U (en) | 2014-11-11 | 2014-11-11 | The treatment unit of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid |
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| Publication Number | Publication Date |
|---|---|
| CN204281302U true CN204281302U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420666566.3U Expired - Fee Related CN204281302U (en) | 2014-11-11 | 2014-11-11 | The treatment unit of simple and easy titanium tetrachloride production tail gas recycle hydrochloric acid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419403A (en) * | 2015-11-23 | 2016-03-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Method of applying chloridized waste acid to titanium dioxide film coating |
-
2014
- 2014-11-11 CN CN201420666566.3U patent/CN204281302U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419403A (en) * | 2015-11-23 | 2016-03-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Method of applying chloridized waste acid to titanium dioxide film coating |
| CN105419403B (en) * | 2015-11-23 | 2017-12-15 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of chlorination spent acid is used for the method for titanium dioxide coating |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Geng Chao Inventor before: Liu Chao |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170905 Address after: 266000 Shandong province Qingdao City, No. 17 Kunshan Road No. 1 building 7 layer 702 Patentee after: QINGDAO LURUN ENERGY ENVIRONMENT Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Futian District Fuhua Road No. 6 Building 1403 business tax Patentee before: Liu Chao |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20211111 |